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Why can't I reference System.ComponentModel.DataAnnotations?
...ng to use DataAnnotations in my WPF project to specify a maximum length of strings, with the following:
14 Answers
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How to set tint for an image view programmatically in android?
...r types of resources, such as integers, bools, dimensions, etc. Except for string, for which you can directly use getString() in your Activity without the need to first call getResources() (don't ask me why).
Otherwise, your code looks good. (Though I haven't investigated the setColorFilter method ...
Deleting an object in java?
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If you want help an object go away, set its reference to null.
String x = "sadfasdfasd";
// do stuff
x = null;
Setting reference to null will make it more likely that the object will be garbage collected, as long as there are no other references to the object.
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This Row already belongs to another table error when trying to add rows?
...lumn("ID", typeof(int));
DataColumn dcName = new DataColumn("Name", typeof(string));
dtSpecificOrders.Columns.Add(dtID);
dtSpecificOrders.Columns.Add(dcName);
DataRow[] orderRows = dt.Select("CustomerID = 2");
foreach (DataRow dr in orderRows)
{
DataRow myRow = dtSpecificOrders.NewRow(); // &...
Rails ActiveRecord date between
...f_day..@selected_date.end_of_day)
Or, if you want to or have to use pure string conditions, you can do:
Comment.where('created_at BETWEEN ? AND ?', @selected_date.beginning_of_day, @selected_date.end_of_day)
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Windows can't find the file on subprocess.call()
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@nueverest Only when the the command string is constructed from external input
– Jirka
Jul 22 '16 at 16:59
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Get the current fragment object
...r.onAttachFragment(fragment);
Toast.makeText(getApplicationContext(), String.valueOf(fragment.getId()), Toast.LENGTH_SHORT).show();
}
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fol...
When and why are database joins expensive?
...t of multi-column joins and radically reducing the cost of joins involving string comparisons. Not only will vastly more fit in cache, there's a lot less disk reading to do.
Moreover, a good optimiser will choose the most restrictive condition and apply it before it performs a join, very effective...
Error 1046 No database Selected, how to resolve?
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one more note - make sure that the jdbc connection string contains the schema name and that schema is created already.
– Gaurav
Sep 3 at 21:16
add a co...
What is the best way to implement a “timer”? [duplicate]
...name you want to run in the application.
protected override void OnStart(string[] args)
{
// It tells in what interval the service will run each time.
Int32 timeInterval = Int32.Parse(Constants.TimeIntervalValue) * 60 * 60 * 1000;
base.OnStart(args);
...